{"id":"CVE-2026-50127","state":"PUBLISHED","title":"Weblate SSRF: outbound URL guard misses the NAT64 well-known prefix (64:ff9b::/96)","description":"Weblate is a web based localization tool. From version 5.15 to before version 2026.6, Weblate's VCS_RESTRICT_PRIVATE did not properly account for some transitional IPv6 ranges, multicast addresses, or some semi-private IPv4 ranges, which allowed some addresses to bypass private range restrictions. This issue has been patched in version 2026.6.","publishedAt":"2026-06-10T19:56:37.829Z","updatedAt":"2026-06-11T14:09:55.504Z","severity":{"score":5.9,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["WeblateOrg weblate"],"affected":[{"vendor":"WeblateOrg","product":"weblate","versions":[{"version":">= 5.15, < 2026.6","status":"affected"}]}],"references":["https://github.com/WeblateOrg/weblate/security/advisories/GHSA-vmfc-9982-2m45","https://github.com/WeblateOrg/weblate/pull/19768","https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.6"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/50xxx/CVE-2026-50127.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50127","state":"PUBLISHED","datePublished":"2026-06-10T19:56:37.829Z","dateUpdated":"2026-06-11T14:09:55.504Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-03T18:49:32.275Z"},"containers":{"cna":{"title":"Weblate SSRF: outbound URL guard misses the NAT64 well-known prefix (64:ff9b::/96)","descriptions":[{"lang":"en","value":"Weblate is a web based localization tool. From version 5.15 to before version 2026.6, Weblate's VCS_RESTRICT_PRIVATE did not properly account for some transitional IPv6 ranges, multicast addresses, or some semi-private IPv4 ranges, which allowed some addresses to bypass private range restrictions. This issue has been patched in version 2026.6."}],"affected":[{"vendor":"WeblateOrg","product":"weblate","versions":[{"version":">= 5.15, < 2026.6","status":"affected"}]}],"references":[{"url":"https://github.com/WeblateOrg/weblate/security/advisories/GHSA-vmfc-9982-2m45","name":"https://github.com/WeblateOrg/weblate/security/advisories/GHSA-vmfc-9982-2m45","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/WeblateOrg/weblate/pull/19768","name":"https://github.com/WeblateOrg/weblate/pull/19768","tags":["x_refsource_MISC"]},{"url":"https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.6","name":"https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.6","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-10T19:56:37.829Z"},"source":{"advisory":"GHSA-vmfc-9982-2m45","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-11T14:09:46.736772Z","id":"CVE-2026-50127","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-11T14:09:55.504Z"}}]}}}